Nut-lock.



J. M. ER.

NUT

APPLICATI .31. 1914- 1,153,649, Patented Sept. 14, 1915.

ICE.

JOHN M. SCANNER, 0F KINGSVILLE, MISSOURI.

NUT-LOCK.

Specification of Letters Patent.

Patented Sept. 14, 1.615.

Application filed August 31, 1914. Serial No. 859,533.

To all whom it may concern:

Be it known that I, JOHN M. TANNER, a citizen of the United States,residing at Kingsville, in the county of Johnson and State of Missouri,have invented certain new and useful Improvements in Nut-Locks, of whichthe following is a specification.

This invention relates to nut locks and more particularly to that classof nut locks in which a key is provided, said key being carried by thenut and adapted for positive engagement with the bolt to preventrotation of the nut thereon.

The object of my invention is to provide a nut lock of the abovedescribed character which shall be simple in construction, cheap tomanufacture and one which is positive in operation.

With the above and other objects in wow my invention resides in theconstruction combination and arrangement of the parts as hereinafter setforth in the specification and illustrated in the accompanying drawings,in which Figure 1 is a perspective View of a bolt and nut showing myimproved locking device attached thereto. Fig. 2 is a top plan view ofthe same showing the key in engagement with the bolt. Fig. 3 is asectional view taken on the line 33 of Fig. 2 looking in the directionof the arrows. Fig. 4 is a fragmentary sectional view showing the mannerin which the key is secured to the nut.

Similar reference characters indicate similar parts throughout thevarious views of the drawings.

Referring more particularly to the drawings in which the preferredembodiment of my invention is illustrated, the numeral 1 indicates abolt of the usual design having a head 2 on one end thereof, and athreaded portion 3 on the opposite end. The said bolt 1 is provided witha longitudinally extending keyway 4, said keyway 4 extending throughoutthe length of the threaded portion 3 of the bolt 1. A nut 5 of the usualcharacter is threaded onto the bolt 1, and said nut 5 carries myimproved key or locking device. In the'preferred form of my inventionthe locking element or key which 'I provide is formed of a single strandof of the nut 5. Carried by the nut 5 and disposed in the opening 6 Iprovide a locking element indicated generally by the numeral 8, thelower'end thereof being screwed or otherwise secured in the opening 6 asindicated at 9, whereby to prevent withdrawal of the said lockingelement 8 from the opening 6. The said locking element 8 is bent abovethe surface of the nut 5 as shown at 10 at substantially right angles toprovide a horizontally extending portion 11, the said portion 11 beingcurved adjacent its outer end as indicated at 12 and adapted to embracethe threaded portion 3 of the bolt 1. The outer end of the said lockingelement 8 is bent inwardly as shown at 13 to engage in the keyway 4 ofthe bolt 1, whereby to prevent rotation of the nut upon the bolt.

When my device is manufactured it has been found desirable to form thekey or locking element 8 as shown in dotted line in Fig. 2, beingindicated by the numeral 14. In this view it will be noticed that theportion 12 of the key is positioned in such a manner as to not interferewith the placing of the nut on the bolt, and it has been found that itis preferable that the same be formed of some flexible material so as tofacilitate the bending of the portion 13 into engagement with the keyway4, also to engage the arcuate portion 12 with the surface or threads ofthe bolt 1. This provides both a positive lockand a frictional lock. Theportion of the key or locking element 8 which is disposed within theopening 6 may be either loosely mounted therein for rotation or may berigidly welded or other- Wise secured in the opening. It is preferablethat the key be rigidly secured in the nut. If so desired the bolt 1 maybe prevented from rotation by placing a pin, indicated in dotted linesin Fig. 1 by the numeral 15, passing through the head 2 of the bolt intothe article or material being held. This vlgvilll effectively preventthe rotation of the From the above description taken in connection withthe accompanying drawings it is thought that a clear and comprehensiveunderstanding of my invention may be had, and I desire that it beunderstood that while I have shown and described my invention aspossessing a peculiar form I may-make such changes in the detailstructure thereof which do not depart from the spirit and scope of theappended claims.

Havlng thus described my invention, what I claim and desire to secure byLetters Pat ent, is

1. A nut lock, in combination with a bolt having a longitudinallyextending keyWay therein and a nut on said bolt, a key for looking saidnut on said bolt formed of a single strand of Wire one end thereof beingsecured in an opening in the nut and the opposite end of said strand ofWire being bent to form a hook member for engagement with the keyway andan intermediate portion of the key being arcuate and embracing the boltin frictional engagement With the threads, whereby to assist inpreventing rotation of the nut.

2. A nut lock, in combination with a bolt having a longitudinal keywaytherein and a nut thereon, of a key formed of a single strand of wirehaving one'extremity thereof.

in pivotal engagement with the nut and the opposite extremity formed toprovide a hook for engagement in said keyWay, the intermediate portionof said key being arcuate whereby frictional and positive engagement maybe had with said bolt.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN M; TANNER.

lVitnesses JOHN TANNER, ROBERT DOBRATZ.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

